Book-section having wide and narrow leaves.



No. 697,495. Patented Apr. l5, I902.

A. 0. & E. R. KITTBEDGE. BOOK SECTION HAVING WIDE AND NARROW LEAVES.

(Application filed Aug. 18, 1899.)

z/ e%i'0. Qflzzeai: 0 mdf/ 0%. %w, 6% wy V UNIT D STAT S PATENT OFFICE.

ANSON O. KITTREDGE AND ERNEST R. KITTRED'GE, OF TENAFLY, NEW JERSEY,ASSIGNORS TO THE AOOOUN '1, AUDIT dz ASSURANCE COMPANY, LIMITED, OF NEWVYORK, N. Y., ACORPORATION OF NEW JERSEY.

BOOK-SECTION HAVING WIDE AND NARROW LEAVES.

SPECIFICATION forming part of Letters Patent No. 697,495, dated April15, 1992.

Application filed August 18, 1899. Serial No. 727,717. (No model.) 7

To all whom it mlay concern:

Be it known that we, ANsoN O. KITTREDGE and ERNEST R. KITTREDGE,citizens of the United States, residing at Tenafly, county of Bergen,State of New Jersey, have invented certain new and useful Improvementsin Book Sections -Having 'Wide and Narrow Leaves, fully described andrepresented in the following specification and the accompa- .ro nyingdrawings, forming a part of the same.

The present invention relates to that class of permanently-bound booksin which wide and narrow leaves are used to facilitate the making ofnumerous entries upon one or more of the narrow leaves in conjunctionwith an inscription upon the projecting margin of one of the wideleaves. Examplesof such books are shown in Hopkins patent, No. 228,637,granted June 8, 1880; Thomsons patent, No.

26 10,977, granted December 25, 1888, and in Such books when used foraccounts and'records of various kinds frequently require to be ruled incolumns and headings printed upon the various'columns or pages.

In most books having wide and narrow leaves a certain number of narrowleaves is 4 bound intermediate to two of the wide leaves and are used inconnection with a record or inscriptions upon the'projecting margin ofsuch leaves. It is found in practice that the demands of variousbusinesses requiremore or less of the narrow leaves for use inconnection with each of the wide leaves, and as such requirements cannotbe anticipated so as to keep the books in stock considerable delay isoften experienced in producing such'books. The present inventionfurnishes a means leaves together when binding them permanently in abook is greatly facilitated by making them all in pairs. The number ofnarrow leaves between each pair of wide leaves is commonly the same in agiven book, and to form a book from the prepared wide and narrow leavesthe required number of the pairs of narrow leaves is inserted Within onepair of the wide leaves to form a group, and a similar number of pairsof the narrow leaves is adjoined to such group to constitute therewith asingle section of the book, and any number of such sections ispermanentlybound together to form the book. The margins of the. wideleaves are all reinforced to agree with the thickness of the interposedleaves.

This method of manufacture is especially use ful in making ruled bookswith printed headings,'as it greatly economizes the use of pa per inmaking books withwide and narrow leaves. v g r Where the leaves of abook are formed ofv uniform size, large sheets may be printed and thenrepeatedly folded to produce a signature or section of leaves of therequired dimensions, with the printed matter in the desired relationupon the several pages but such folding of a sheet produces leaves ofuniform size, and books having wide and narrow leaves can only be madeby this method by forming the book wholly with wide leaves and trimmingoff those which require to be narrow. Such trimming of the leavesinvolves great waste of paper, and various attempts have been made toproduce books of account by. using single printed sheets of paper, as inloose-leaf ledgers, and folded sheets of paper, as in various othercontructions; but the present invention has been devised to furnish atI00 short notice various combinations of wide and narrow leaves to formthe book by using groups or sections having the wide and narrow leavesthat may be required for a special purpose. By making only two leavesout of each sheet the leaves of a given kind of account-book may beprinted and folded in pairs and kept in readiness to group together insections of any desired size, the wide leaves required with books ofthis class being also furnished in pairs forming a part of each of thesections.

While the numberof narrow leaves is commonly the same in the successivesections of a given book, demand frequently arises for an exceptionalbook in which a greater or less number of the narrow leaves is requiredfor each section. In making a variety of such books no uniform system ofprinting and folding sheets to produce signatures or groups of wide andnarrow leaves can therefore be employed; but in the present inventionsuch variety is secured by manufacturing the elements of the groupseparately and combining them into sections of the desired character.Books in great variety can thus be manufactured at short notice from thesame materials previously prepared. By this method narrow leaves can becombined with wider leaves of any desired width, and wide leaves of agiven width can be combined with narrower leaves of any desired width.The edge of the wide leaf can be reinforced by various means tocorrespond with the thickness of the annexed group of narrow leaves andthe book be thus made of uniform thickness throughout. Such thickeningis best efiected by folding over theedge of the wide leaf or otherwiseforming upon its margin a hollow pocket adapted to receive a filler ofany desired thickness,and the thickening may thus be efiected after thegroups are assembled in exact agreement with the thickness of the narrowleaves in the group. I

The invention will be understood by reference to the annexed drawings,in which Figure l is an end view of an open book with the leavesseparated at the left sideto show the disposition of the wide and narrowleaves. Fig. 2 represents in perspective a pair of the narrow leavesfrom such book formed from a single sheet; Fig. 3, a group comprisingtwo wide leaves with three pairs of narrow leaves inserted within thefold of the same. Fig. 4: is an end view of the edge of the wide leaf,upon a larger scale, showing the pocket upon the same to receive afiller or thickener. Fig. 5 is an end view of a group of the sectionssuch as would be used in forming a book of sections.

a designates the narrow leaves, (shown in Fig. 2,) formed by oncefolding a sheet of forced by a pocket. An integral flap 0 is shown inFig. 4 folded over and its edge secured to the face of the leaf to formthe pocket d. Such pocket being expansible is adapted to receive a stripof paper or pasteboard of any desired thickness. The visible surfaces ofthe wide and narrow leaves are shown ruled in Fig. 3, and such ruling isreadily efiected upon the sheets before they are folded.

Fig. 5 shows in a diagrammatic form three sections adapted to make abook of forty-two leaves, with six narrow leaves for use with each ofthe wide ones. Each of the sections comprises one of the groups shown inFig. 3 and designated collectively g in Fig. 5, with three pairs of thenarrow leaves adjoined to the left-hand side of each group anddesignated collectively f. With this arrangement the thickener upon eachof the wide leaves compensates in the binding of the book for the pairsof narrow leaves at one side of such wide leaf. The formation of all theleaves in pairs and the formation of the sections with groups of suchpairs greatly facilitates the securing of the leaves in the permanentbinding of the book, while it affords all the advantages above describedfor selecting the elements of the book from stock previously prepared byruling and printing.

From the above description it will be readily seen that the wide andnarrow leaves may be manufactured in integral pairs and kept in stock insuch variety of widths as is necessary and may at short notice becombined together in groups or sections of any desired magnitude ornumber of leaves. Such sections then constitute book units, which maythen be bound together in any desired number to form a book of therequired character. Sections or units of different character may withthe same facility be just as readily made and combined in the same book,and the books are thus constructed without cutting the paper to waste orrequiring any material alteration in the leaves after the book is bound.Where books require uniform printing or ruling, but vary in the numberof leaves in the different units, the leaves may be made by printing andruling sheets of suitable size and then folding such sheets to formintegral pairs of the wide or narrow leaves and carrying the same instock until a given book is ordered and the capacity of the book isknown.

Having thus set forth the nature of the invention, what is claimedherein is 1. A book having wide and narrow leaves with an integral flapupon the margin of each of the wide leaves folded uniformly backward tothicken the edge and to produce a level and unobstructed writing-surfaceupon all of the said leaves upon the same side thereof.

2. A sheet folded to form two leaves of equal width and having themargin of each leaf folded over to form an integral flap, and thelongitudinal edge of such flap being secured to the face of the leaf toform a longitudinal pocket having openings at the ends only.

ICC

row leaves adjoined to the side of such group, whereby the thickenerupon each of the wide 15 leaves compensates for the narrow leaves at oneside of such wide leaf.

In testimony whereof wehave hereunto set our hands in the presence oftwo subscribing witnesses.

Anson o. KITTREDGE. ERNEST R. KITTREDGE.

Witnesses:

JOHN J .'l\/IOBRIDE, v THoMAs S. CRANE.

